^^Oh, we have a silly peep in our midst. Chessie is one of the best UK parks (just slightly beaten by Alton), it has a great selection of attractions for everyone, yeah it could do with a bit more but its probably the only park in the UK which mixes theme park/zoo/sea life centre all in one really well. I've probably visited this park more than 100 times and I still look forward to going back, the atmosphere is always good no matter what the weather is like and although the rides aren't the most thrilling out there they are fun and still very enjoyable.
I agree Thorpe isn't great but I still find myself going back, it does have some good rides (Inferno, Rush).
Legoland on the other hand is a complete dump and I so hope Merlin don't bring their silly prices to the other parks. As pointed out earlier it can cost up to and over £10 just for a small crappy meal that tastes worse than the backside of a donkey (Chessie you can have a nice meal in the Greedy Goblin pub which only comes to about £5). The attractions at the park are terrible and the theming is mediocre (ok, the castle is quite good, but thats it). It has a really cripe atmosphere, no-one really seemed to enjoy themselves there. So yeah, I went for Legoland as the worst.